MAINTAINERS: Update Anup's email address

I am no longer work at Western Digital so update my email address to
personal one and add entries to .mailmap as well.
Signed-off-by: Anup Patel <anup@brainfault.org>
Acked-by: Atish Patra <atishp@rivosinc.com>

.mailmap

@@ -46,6 +46,7 @@ Andy Adamson <andros@citi.umich.edu>
 Antoine Tenart <atenart@kernel.org> <antoine.tenart@bootlin.com>
 Antoine Tenart <atenart@kernel.org> <antoine.tenart@free-electrons.com>
 Antonio Ospite <ao2@ao2.it> <ao2@amarulasolutions.com>
+Anup Patel <anup@brainfault.org> <anup.patel@wdc.com>
 Archit Taneja <archit@ti.com>
 Ard Biesheuvel <ardb@kernel.org> <ard.biesheuvel@linaro.org>
 Arnaud Patard <arnaud.patard@rtp-net.org>

MAINTAINERS

@@ -10444,7 +10444,7 @@ F:	arch/powerpc/kernel/kvm*
 F:	arch/powerpc/kvm/
 
 KERNEL VIRTUAL MACHINE FOR RISC-V (KVM/riscv)
-M:	Anup Patel <anup.patel@wdc.com>
+M:	Anup Patel <anup@brainfault.org>
 R:	Atish Patra <atishp@atishpatra.org>
 L:	kvm@vger.kernel.org
 L:	kvm-riscv@lists.infradead.org